You should just replace the following:
1. Front control arms
2. front control arm bushings
3. tierods (inner and outer bought together, use lemforder)
4. tierod boots (the rubber covers)
5. steering guibo
It'll cost you about $400 in parts. If this doesn't solve it, then you may have a steering rack issue, but it could still be front strut mounts that have gone bad. Fortunately, you can get a remanufactured steering rack for about $200. You don't need to get a brand new $1200 steering rack. Also, go to a new mechanic. These guys are trying to screw you for parts/labor.
Last edited by WDE46; 12-31-2012 at 11:36 AM.